APES - Quiz II - Nuclear Power

Nuclear power plants rely on which of the following reactions to generate energy?

• Fusion

• Half-life

• Fission

• Fusion or fission

This is an example of...

• Fission  reaction
• Fusion reaction
• Decomposition reaction
• Combustion

What is an advantage  of nuclear energy?

• radioactive waste
• no air pollution
• we will never run out
• it is the safest way to make energy

The time needed for half of a radioactive sample to decay is called its __________.

• decay period

• period

• transmutation time

• half-life

What controls the reaction within a nuclear reactor?

• Control Rods

• Moderator

• Containment building

• Reactor Vessel

Three Mile Island differed from Chernobyl and Fukushima because...

• It wasn't a complete meltdown

• The core melted down

• Radiation was released

• Many people died

A radioactive isotope has a half life of 30 years.  At year 0, there are 400 radioactive atoms.  How many are left after 120 years of decay? 

• 50 atoms
• 30 atoms
• 25 atoms
• 12.5 atoms

Of the three most pre-eminent nuclear disasters known around the world, what was the common theme across the failed systems?

• Failure of cooling systems

• Explosion from fission

• Earthquakes and tsunamis

• Deaths from radiation

Which nuclear fuel is usually used in thermal nuclear reactor to create fission?

• U234

• U235

• U236

• U237

Which parts function is to reduce the energy of fast neutrons to thermal neutrons in nuclear power plant?

• Moderator

• Coolant circulator

• Control rods

• Shielding